The Grab / Electromagnetism Dual Purpose Overhead Crane is widely used in metallurgical, cement and chemical industry, conveying bulk and granular material such as, coal, ore, limestone, sand; and iron, iron wires, nails, scrap iron and other all kinds of iron materials can be loading unloading by using the electromagnetic disk.
The working duty is A6, rated lifting weight includes grab deadweight,  grab can be devided into light, middle and heavy types according to grabing objectives. Rain cover for outside working, which leads 5% increase on total crane weight and wheel pressure.
When making use of magnet disk, the rotary parts of the hook must be tightly locked with screws and rotation is not allowed.

Sketch: